ject: Pinholes (was Re: glenn's peephole fisheye)
> Steve Larson
> > Glenn wrote:
> > > Field of view on a pinhole can be changed with extension tubes, BTW.
> > > And you're right about precision of the hole -- I've not yet managed
> > > to get one
to a body cap.
Cheers,
Gerald
- Original Message -
From: "D. Glenn Arthur Jr." <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Sunday, March 04, 2001 6:55 AM
Subject: RE: glenn's peephole fisheye
> Peter Smith wrote:
> > Are you trying to make a
afaik the thickness of the sheet in which the hole is matters. You will get
more vignetting at wider view with thick sheet than with very thin sheet.
Also, the elipticall hole (as seen from the side) will cause less
sharpness, perhaps.
The reality might differ, though :)
Frantisek
-
This messa
Glenn wrote:
> Field of view on a pinhole can be changed with extension tubes, BTW.
> And you're right about precision of the hole -- I've not yet managed
> to get one sharp enough in the thin sheets of brass I'm using (taped
> across a larger hole in the plastic body cap). Last time I played
>
Peter Smith wrote:
> Are you trying to make a pinhole Camera?
No, I'm trying to use one of those lensed peepholes that mount
into a hole you drill in your front door, that provides about
a 180-degree field of view. Realy cheap fisheye.
Additional info: Using a 55/1.8 instead of the 50/1
ctive but ne're mind eh?
Peter
> -Original Message-
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED]]On Behalf Of Dan Scott
> Sent: 04 March 2001 06:31
> To: [EMAIL PROTECTED]
> Subject: glenn's peephole fisheye
>
>
>
> >In completely unrel
> Might be that the minimum focus distance of your eye is better than that of
> your M42 50mm. Sounds like a cool project, though.
Urf. In a way that the extension tube wouldn't help with? (With no
extension I couldn't get a recognizeable image, nor with a longer
extension, but with 12mm extens
>In completely unrelated news, I finally got around to making a hole
>in a lens cap to mount one of those fisheye peephole thingies I got
>at a hardware store many months ago, and played with it on the front
>of an M42 50mm briefly. It does want a short extension tube behind
>it (and if there's
8 matches
Mail list logo
